text: The OCD-D-101 is a GM tube replacement kit for the CD V-700 introduced in 1963.
  The kit, which was produced by Lionel Electronic Labs and EON Corporation, is designed to decrease the sensitivity of Model 6, 6A & 6B meters by ten times.
  This would result in the following ranges:
  * x10   (0-5   mR/h or 0-3000   C/m)
  * x100  (0-50  mR/h or 0-30000  C/m)
  * x1000 (0-500 mR/h or 0-300000 C/m)
  One or two pressure-sensitive metal foil labels were included to indicate the new range scale.